Example usage for java.nio ByteBuffer putLong

List of usage examples for java.nio ByteBuffer putLong

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Introduction

In this page you can find the example usage for java.nio ByteBuffer putLong.

Prototype

public abstract ByteBuffer putLong(int index, long value);

Source Link

Document

Writes the given long to the specified index of this buffer.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.putLong(2, 123);

    System.out.println(Arrays.toString(bbuf.array()));
}

From source file:Main.java

public static byte[] longToBytes(long x) {
    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.putLong(0, x);
    return buffer.array();
}

From source file:Main.java

public static byte[] longToBytes(long x) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.SIZE / 8);
    buffer.putLong(0, x);
    return buffer.array();
}

From source file:org.voltdb.ClientResponseImpl.java

/**
 * Set the client handle without deserializing it first
 * @param b/* ww w .  j  a  v a 2  s .  co  m*/
 * @param handle
 */
public static void setClientHandle(ByteBuffer b, long handle) {
    b.putLong(13, handle); // 1 + 4 + 8 
}

From source file:org.cryptomator.crypto.aes256.AesSivCipherUtil.java

static byte[] sivEncrypt(byte[] aesKey, byte[] macKey, byte[] plaintext, byte[]... additionalData)
        throws InvalidKeyException {
    if (aesKey.length != 16 && aesKey.length != 24 && aesKey.length != 32) {
        throw new InvalidKeyException("Invalid aesKey length " + aesKey.length);
    }/*from www.j  a va  2  s. co m*/

    final byte[] iv = s2v(macKey, plaintext, additionalData);

    final int numBlocks = (plaintext.length + 15) / 16;

    // clear out the 31st and 63rd (rightmost) bit:
    final byte[] ctr = Arrays.copyOf(iv, 16);
    ctr[8] = (byte) (ctr[8] & 0x7F);
    ctr[12] = (byte) (ctr[12] & 0x7F);
    final ByteBuffer ctrBuf = ByteBuffer.wrap(ctr);
    final long initialCtrVal = ctrBuf.getLong(8);

    final byte[] x = new byte[numBlocks * 16];
    final BlockCipher aes = new AESFastEngine();
    aes.init(true, new KeyParameter(aesKey));
    for (int i = 0; i < numBlocks; i++) {
        final long ctrVal = initialCtrVal + i;
        ctrBuf.putLong(8, ctrVal);
        aes.processBlock(ctrBuf.array(), 0, x, i * 16);
        aes.reset();
    }

    final byte[] ciphertext = xor(plaintext, x);

    return ArrayUtils.addAll(iv, ciphertext);
}

From source file:org.cryptomator.crypto.aes256.AesSivCipherUtil.java

static byte[] sivDecrypt(byte[] aesKey, byte[] macKey, byte[] ciphertext, byte[]... additionalData)
        throws DecryptFailedException, InvalidKeyException {
    if (aesKey.length != 16 && aesKey.length != 24 && aesKey.length != 32) {
        throw new InvalidKeyException("Invalid aesKey length " + aesKey.length);
    }//from   w  w w  . j av  a2 s  .  co m

    final byte[] iv = Arrays.copyOf(ciphertext, 16);

    final byte[] actualCiphertext = Arrays.copyOfRange(ciphertext, 16, ciphertext.length);
    final int numBlocks = (actualCiphertext.length + 15) / 16;

    // clear out the 31st and 63rd (rightmost) bit:
    final byte[] ctr = Arrays.copyOf(iv, 16);
    ctr[8] = (byte) (ctr[8] & 0x7F);
    ctr[12] = (byte) (ctr[12] & 0x7F);
    final ByteBuffer ctrBuf = ByteBuffer.wrap(ctr);
    final long initialCtrVal = ctrBuf.getLong(8);

    final byte[] x = new byte[numBlocks * 16];
    final BlockCipher aes = new AESFastEngine();
    aes.init(true, new KeyParameter(aesKey));
    for (int i = 0; i < numBlocks; i++) {
        final long ctrVal = initialCtrVal + i;
        ctrBuf.putLong(8, ctrVal);
        aes.processBlock(ctrBuf.array(), 0, x, i * 16);
        aes.reset();
    }

    final byte[] plaintext = xor(actualCiphertext, x);

    final byte[] control = s2v(macKey, plaintext, additionalData);

    if (MessageDigest.isEqual(control, iv)) {
        return plaintext;
    } else {
        throw new DecryptFailedException("Authentication failed");
    }
}

From source file:com.linkedin.pinot.core.indexsegment.utils.MmapMemoryManagerTest.java

@Test
public void testSmallBlocksForSameColumn() throws Exception {
    final String segmentName = "someSegment";
    PinotDataBufferMemoryManager memoryManager = new MmapMemoryManager(_tmpDir, segmentName);
    final long s1 = 500;
    final long s2 = 1000;
    final String col1 = "col1";
    PinotDataBuffer buf1 = memoryManager.allocate(s1, col1);

    PinotDataBuffer buf2 = memoryManager.allocate(s2, col1);

    ByteBuffer b1 = buf1.toDirectByteBuffer(0, (int) s1);
    b1.putLong(0, s1);

    ByteBuffer b2 = buf2.toDirectByteBuffer(0, (int) s2);
    b2.putLong(0, s2);//from   w w w.j  a  va2s .com

    Assert.assertEquals(b1.getLong(0), s1);
    Assert.assertEquals(b2.getLong(0), s2);

    File dir = new File(_tmpDir);
    Assert.assertEquals(dir.listFiles().length, 1);

    buf1.close();
    buf2.close();

    memoryManager.close();

    List<Pair<MmapUtils.AllocationContext, Integer>> allocationContexts = MmapUtils.getAllocationsAndSizes();
    Assert.assertEquals(allocationContexts.size(), 0);

    Assert.assertEquals(dir.listFiles().length, 0);
}

From source file:com.linkedin.pinot.core.indexsegment.utils.MmapMemoryManagerTest.java

@Test
public void testLargeBlocks() throws Exception {
    final String segmentName = "someSegment";
    PinotDataBufferMemoryManager memoryManager = new MmapMemoryManager(_tmpDir, segmentName);
    final long s1 = 2 * MmapMemoryManager.getDefaultFileLength();
    final long s2 = 1000;
    final String col1 = "col1";
    final String col2 = "col2";
    final byte value = 34;
    PinotDataBuffer buf1 = memoryManager.allocate(s1, col1);

    // Verify that we can write to and read from the buffer
    ByteBuffer b1 = buf1.toDirectByteBuffer(0, (int) s1);
    b1.putLong(0, s1);
    Assert.assertEquals(b1.getLong(0), s1);
    b1.put((int) s1 - 1, value);
    Assert.assertEquals(b1.get((int) s1 - 1), value);

    PinotDataBuffer buf2 = memoryManager.allocate(s2, col2);
    ByteBuffer b2 = buf2.toDirectByteBuffer(0, (int) s2);
    b2.putLong(0, s2);//from w w  w  .j  a  va2s .  c o  m
    Assert.assertEquals(b2.getLong(0), s2);

    File dir = new File(_tmpDir);
    File[] files = dir.listFiles();
    Assert.assertEquals(files.length, 2);

    Arrays.sort(files, new Comparator<File>() {
        @Override
        public int compare(File o1, File o2) {
            return o1.getName().compareTo(o2.getName());
        }
    });

    String fileName = files[0].getName();
    Assert.assertTrue(fileName.contains(segmentName));

    fileName = files[1].getName();
    Assert.assertTrue(fileName.contains(segmentName));

    buf1.close();
    buf2.close();

    memoryManager.close();

    List<Pair<MmapUtils.AllocationContext, Integer>> allocationContexts = MmapUtils.getAllocationsAndSizes();
    Assert.assertEquals(allocationContexts.size(), 0);
    Assert.assertEquals(new File(_tmpDir).listFiles().length, 0);
}

From source file:de.micromata.genome.logging.spi.ifiles.IndexHeader.java

public void writeFileHeader(OutputStream os, File indexFile, IndexDirectory indexDirectory) throws IOException {
    indexDirectoryIdx = indexDirectory.createNewLogIdxFile(indexFile);
    ByteBuffer lbb = ByteBuffer.wrap(new byte[Long.BYTES]);
    ByteBuffer ibb = ByteBuffer.wrap(new byte[Integer.BYTES]);
    os.write(INDEX_FILE_TYPE);/*from   www.  ja v  a2 s.  c  om*/
    os.write(INDEX_FILE_VERSION);
    lbb.putLong(0, System.currentTimeMillis());
    os.write(lbb.array());
    ibb.putInt(0, indexDirectoryIdx);
    os.write(ibb.array());
    ByteArrayOutputStream bout = new ByteArrayOutputStream();
    for (Pair<String, Integer> headerp : headerOrder) {
        String hn = StringUtils.rightPad(headerp.getFirst(), HEADER_NAME_LENGTH);
        bout.write(hn.getBytes());
        ibb.putInt(0, headerp.getSecond());
        bout.write(ibb.array());
    }
    byte[] headerar = bout.toByteArray();
    int idxOffset = FILE_TYPE_LENGTH + FILE_VERSION_LENGTH + Long.BYTES /* timestamp */
            + Integer.BYTES /** indexDirectory */
            + Integer.BYTES /* indexOfset */
            + headerar.length;
    ibb.putInt(0, idxOffset);
    os.write(ibb.array());
    os.write(headerar);
    os.flush();
}

From source file:org.saadahmed.snowcrystal.SnowCrystal.java

protected SnowCrystal(long timestamp, short sequence, byte[] nodeId) {
    if (sequence > 4095) {
        throw new IllegalArgumentException(
                "Sequence cannot be greater than 2^12 - 1 = 4095. Sequence found: " + sequence);
    }/*from   w ww  .jav a 2 s. c o  m*/

    if (nodeId == null) {
        throw new NullPointerException("SnowCrystal Node id is null");
    }
    if (nodeId.length != NODE_LENGTH) {
        throw new IllegalArgumentException(
                "Invalid SnowCrystal Node size. Expected: " + NODE_LENGTH + ", Found: " + nodeId.length);
    }

    long ts = timestamp << 4;
    byte[] tsBytes = ByteBuffer.allocate(8).putLong(ts).array();
    byte[] seqBytes = ByteBuffer.allocate(2).putShort(sequence).array();
    byte commonByte = (byte) (tsBytes[7] | seqBytes[0]);

    ByteBuffer buffer = ByteBuffer.allocate(SNOWCRYSTAL_LENGTH);
    buffer.putLong(TIMESTAMP_OFFSET, ts);
    buffer.put(SEQUENCE_0_OFFSET, commonByte);
    buffer.put(SEQUENCE_1_OFFSET, seqBytes[1]);

    this.binary = buffer.array();
    System.arraycopy(nodeId, 0, this.binary, NODE_OFFSET, NODE_LENGTH);
}